Rhinos are shipped as Class 2 street-legal e-bikes. Most states do not require licenses to operate Class 2 e-bikes. However, it’s best to check your State and local laws to ensure you fully understand any licensing, age, speed, and safety equipment requirements and restrictions for a Class 2 e-bike (or a Class 3 e-bike if you choose to unlock it!).
Here is a good summary from the National Conference of State Legislatures on e-bike laws in each state, which may give you a good starting point for your research.